CN104199193A - Display device capable of switching 2D display and 3D display - Google Patents

Display device capable of switching 2D display and 3D display Download PDF

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Publication number
CN104199193A
CN104199193A CN201410373908.7A CN201410373908A CN104199193A CN 104199193 A CN104199193 A CN 104199193A CN 201410373908 A CN201410373908 A CN 201410373908A CN 104199193 A CN104199193 A CN 104199193A
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China
Prior art keywords
liquid crystal
display
lens unit
display device
crystal lens
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CN201410373908.7A
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Chinese (zh)
Inventor
吴坤
王涛
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Application filed by BOE Technology Group Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to CN201410373908.7A priority Critical patent/CN104199193A/en
Publication of CN104199193A publication Critical patent/CN104199193A/en
Priority to US14/771,015 priority patent/US9838676B2/en
Priority to PCT/CN2014/094089 priority patent/WO2016015435A1/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/356—Image reproducers having separate monoscopic and stereoscopic modes
    • H04N13/359—Switching between monoscopic and stereoscopic modes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • G02B30/28—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays involving active lenticular arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/305—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using lenticular lenses, e.g. arrangements of cylindrical lenses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/398—Synchronisation thereof; Control thereof
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/294—Variable focal length devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2213/00—Details of stereoscopic systems
    • H04N2213/001—Constructional or mechanical details

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Geometry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Liquid Crystal (AREA)

Abstract

The invention relates to the technical field of display, and discloses a display device capable of switching 2D display and 3D display. The display device comprises a display panel, an optical element and a liquid crystal lens, wherein the optical element, comprising a plurality of optical lens units, is arranged at the light output side of the display panel by a laminating manner; the liquid crystal lens comprises a liquid crystal lens unit which corresponds to each optical lens unit, wherein the liquid crystal lens units are the liquid crystal lens units which act on the light with the effect opposite to that of the optical lens unit while reaching 2D display, or the liquid crystal lens units which only act like flat glass while reaching 3D display. According to the technical scheme, the display device capable of switching the 2D display and the 3D display has the advantages that crosstalk occurring in 3D display can be decreased, and the display effect can be improved.

Description

Display device with switchable 2D and 3D display
Technical Field
The invention relates to the technical field of display, in particular to a display device with switchable 2D and 3D display.
Background
With the rapid development of the stereoscopic display technology, the stereoscopic display device has a great deal of demands, and among the technologies for realizing the three-dimensional stereoscopic display, naked-eye stereoscopic display is favored in the field of three-dimensional stereoscopic display due to the advantage of no need of glasses for viewers.
As shown in fig. 1, the main way to realize the autostereoscopic display technology at present is to set a grating 3 ' on the light exit side of a display panel 1 ', the grating 3 ' and the display panel 1 ' can be bonded and fixed by a bonding layer 4 ', and a pixel unit of the display panel is divided into a left-eye pixel and a right-eye pixel, so as to provide two different images for the left and right eyes of a viewer respectively, and form a depth of field by using the parallax effect of the left-eye image and the right-eye image of the viewer, thereby generating a stereoscopic display effect. The grating comprises a shielding type grating and a light splitting type grating, the shielding type grating comprises a black-white parallax barrier grating and a liquid crystal slit grating, and the light splitting type grating comprises a columnar physical lens, a liquid crystal lens and the like.
Due to the fact that the shielding type grating is adopted, the 3D display brightness of the display device is reduced seriously, and the backlight brightness needs to be increased for improving the brightness, so that the power consumption is increased, the light-splitting type grating is a new technology which is recently paid more attention to by the market, and particularly, a liquid crystal lens in the light-splitting type grating can realize 2D and 3D switching display and is widely applied. However, as shown in fig. 1 and fig. 2, where the X coordinate in fig. 2 is the position of the lc lens, the Y coordinate is the phase retardation, and the grating 3' is the lc lens including a plurality of lc lens units, the liquid crystal molecules located at the boundary area of the adjacent lc lens units are easily affected by the alignment direction and voltage, and further the twist of the liquid crystal molecules in the area is affected, so that the arrangement of the liquid crystal molecules is disordered to cause crosstalk in 3D display;
in order to match the viewing distance set by the full-high-definition display device and the distance between the grating and the display panel, the liquid crystal lens needs to adopt a thicker liquid crystal layer and a larger liquid crystal refractive index, for example, in the full-high-definition display device of 13.3 inches, the set viewing distance is 600mm, the direct distance between the liquid crystal lens and the display panel is 1mm, in this case, the thickness of the liquid crystal layer of the liquid crystal lens is 40 μm, and the liquid crystal refractive index is more than 0.3. As shown in fig. 3, where the X coordinate in fig. 3 is the position of the liquid crystal lens, and the Y coordinate is the retardation amount, when the thickness of the liquid crystal layer of the liquid crystal lens is larger, the alignment effect of the alignment layer on the liquid crystal molecules at the center of the liquid crystal layer is weakened, and the retardation curve of the liquid crystal lens is not smooth enough compared with the theoretical curve when 3D display is implemented, so that crosstalk occurs during 3D display, and the 3D display effect is poor.
Disclosure of Invention
The invention aims to provide a display device capable of switching between 2D display and 3D display, which is used for realizing the display device capable of switching between the 2D display and the 3D display, reducing crosstalk in the 3D display and improving the display effect.
The display device with switchable 2D and 3D display of the embodiment of the invention comprises: a display panel, an optical element and a liquid crystal lens which are positioned on the light-emitting side of the display panel and are arranged in a laminated manner, wherein,
the optical element includes a plurality of optical lens units, and the liquid crystal lens includes a liquid crystal lens unit corresponding to each optical lens unit;
the liquid crystal lens unit can form a liquid crystal lens unit opposite to the optical lens unit in light when 2D display is realized, and the liquid crystal lens unit has a plane glass function when 3D display is realized.
Optionally, the optical lens unit is a concave lens, and the liquid crystal lens unit is a liquid crystal lens unit capable of forming a convex lens effect when 2D display is implemented; or,
the optical lens unit is a convex lens unit, and the liquid crystal lens unit is a liquid crystal lens unit capable of forming a concave lens effect when 2D display is realized.
Preferably, the focal position of the optical lens unit coincides with the focal position of the liquid crystal lens unit.
Optionally, the optical element is located above the liquid crystal lens, or the liquid crystal lens is located above the optical element.
Preferably, the liquid crystal lens specifically includes:
the device comprises an upper substrate and a lower substrate arranged opposite to the upper substrate;
a liquid crystal layer between the upper substrate and the lower substrate;
the first transparent electrode is positioned on one side, close to the liquid crystal layer, of the upper substrate;
the second transparent electrode is positioned on one side, close to the liquid crystal layer, of the lower substrate;
the first orientation film is positioned on one side, close to the liquid crystal layer, of the first transparent electrode;
a second alignment film on the second transparent electrode at a side close to the liquid crystal layer;
in the 2D display mode, voltage is applied to the first transparent electrode and each second transparent electrode to generate an electric field, liquid crystal molecules in the liquid crystal layer are deflected, and the liquid crystal lens unit forms a liquid crystal lens unit which has opposite action to the optical lens unit on light rays.
Preferably, the first transparent electrode is a plate-shaped electrode, and the second transparent electrode is a plurality of strip-shaped electrodes arranged in parallel; or the first transparent electrode is a plurality of strip-shaped electrodes which are arranged in parallel, and the second transparent electrode is a plate-shaped electrode.
Preferably, the plurality of optical lens units are a plurality of mutually parallel and adjacent lenticular lens units.
Preferably, the extending direction of the lenticular lens unit is the same as the extending direction of the gate line of the display device.
Preferably, the extending direction of the lenticular lens unit is the same as the extending direction of the data line of the display device.
Preferably, the extending direction of the lenticular lens unit and the extending direction of the gate line of the display device form a set included angle.
In the display device with switchable 2D and 3D display, when the 2D display is needed, a first transparent electrode and a second transparent electrode of a liquid crystal lens are electrified, the arrangement mode of liquid crystal molecules in the liquid crystal lens is controlled, the effect of a liquid crystal lens unit in the liquid crystal lens on light is opposite to the effect of an optical lens unit on the light, the same picture is input into a left-eye pixel and a right-eye pixel of a display panel, and the light emitted by the left-eye pixel and the right-eye pixel is superposed through the optical effect of the optical element and the optical effect of the liquid crystal lens, so that the 2D display effect is realized; when 3D display is required to be achieved, the first transparent electrode and the second transparent electrode on the liquid crystal lens are stopped to be electrified, the liquid crystal lens is equivalent to plane glass, a left eye picture is input into a left eye pixel of the display panel, a right eye picture is input into a right eye pixel of the display panel, light emitted by the left eye pixel is emitted to the left eye of a viewer through the optical element, light emitted by the right eye pixel is emitted to the right eye of the viewer through the optical element, and the 3D display effect is achieved.
Drawings
FIG. 1 is a schematic diagram of a prior art 3D display;
FIG. 2 is a schematic diagram of a phase retardation curve of a liquid crystal lens for implementing 3D display according to the prior art;
FIG. 3 is a schematic diagram of another phase retardation curve of a liquid crystal lens for implementing 3D display according to the prior art;
FIG. 4 is a schematic diagram illustrating a schematic structural diagram of a display device according to an embodiment of the present invention when 2D display is implemented;
fig. 5 is a schematic structural diagram of a display device according to an embodiment of the present invention, when implementing 3D display.
Reference numerals:
1-display panel 2-optical element 2 a-optical lens unit
3-liquid crystal lens 3 a-liquid crystal lens unit 31-upper substrate
32-lower substrate 33-first transparent electrode 34-first alignment film
35-liquid crystal layer 36-second alignment film 37-second transparent electrode
1 ' -display panel 3 ' -grating 4 ' -adhesive layer
Detailed Description
In order to realize a display device capable of switching between 2D display and 3D display, reduce crosstalk in 3D display and improve display effect, the invention provides a display device capable of switching between 2D display and 3D display. In the technical scheme, the 2D and 3D display switching is realized by combining the optical element with the liquid crystal lens and controlling the arrangement mode of liquid crystal molecules of the liquid crystal lens, so that the crosstalk in the 3D display is reduced, and the display effect is improved.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to specific examples below. The thicknesses of the layers and the size and shape of the regions in the drawings do not reflect the true scale of the display device and are intended to be illustrative only of the present invention.
As shown in fig. 4 and 5, the schematic structural diagram of the embodiment of the switchable display device with 2D and 3D display of the present invention includes: a display panel 1, an optical element 2 and a liquid crystal lens 3 which are positioned on the light-emitting side of the display panel 1 and are stacked, wherein,
the optical element 2 includes a plurality of optical lens units 2a, and the liquid crystal lens 3 includes a liquid crystal lens unit 3a corresponding to each optical lens unit;
the liquid crystal lens unit 3a is a liquid crystal lens unit (see fig. 4) capable of forming a reverse effect of the optical lens unit 2a on light when 2D display is realized, and a liquid crystal lens unit (see fig. 5) having a flat glass effect when 3D display is realized.
Note that the liquid crystal lens unit 3a is a liquid crystal lens unit that can form a reverse effect of the optical lens unit on light when 2D display is implemented, that is, when the optical lens unit 2a is a concave lens, the liquid crystal lens unit 3a has a convex lens effect when power is applied; when the optical lens unit 2a is a convex lens, the liquid crystal lens unit 3a has a concave lens action when energized, in which the concave lens acts to diverge light rays and the convex lens acts to converge light rays. Of course, the liquid crystal lens unit realizes the function of transmitting light through the plane glass when not powered; the relative positions of the optical element 2 and the liquid crystal lens 3 may be: the optical element 2 is located above the liquid crystal lens 3, and the liquid crystal lens 3 may be located above the optical element 2, which is not particularly limited herein.
The present embodiment will be described below by taking as an example the case where the liquid crystal lens 3 is positioned above the optical element 2, the optical lens unit 2a is a concave lens, and the liquid crystal lens unit 3a has a convex lens function when energized.
The liquid crystal lens is a grating structure which at least consists of a liquid crystal layer and electrodes positioned at two sides of the liquid crystal layer and has the lens effect; the liquid crystal molecules deflect under the action of an electric field formed by electrodes on two sides of the liquid crystal layer, so that the whole liquid crystal lens has the action of a convex lens; the liquid crystal molecules are horizontally arranged under the condition of no electric field, and the light transmission effect of the plane glass is formed. The liquid crystal lens 3 shown in fig. 4 includes a plurality of liquid crystal lens cells 3a, and each of the liquid crystal lens cells 3a has a convex lens function, in one-to-one correspondence with the plurality of optical lens cells 2a of the optical element 2.
When the display device provided in this embodiment is applied to 3D display, as shown in fig. 5, the arrangement mode of the liquid crystal molecules in the liquid crystal lens is controlled, so that the liquid crystal lens has no blocking effect on light, that is, the liquid crystal lens has the function of a plane glass, a left-eye image is input to a left-eye pixel of the display panel, a right-eye image is input to a right-eye pixel of the display panel, light emitted by the left-eye pixel is emitted to the left eye of a viewer through the optical element, and light emitted by the right-eye pixel is emitted to the right eye of the viewer through the optical element, thereby realizing the effect of 3D display. Compared with the prior art in which 3D display is realized by adopting a liquid crystal lens, the optical element is easy to manufacture and low in cost, and is not influenced by factors such as voltage in the application process, so that crosstalk is not easy to occur in the 3D display process, the display effect of the 3D display is improved, and the stereoscopic effect is better.
When the display device provided by this embodiment is applied to 2D display, as shown in fig. 4, the arrangement mode of the liquid crystal molecules in the liquid crystal lens is controlled, so that the liquid crystal lens has a convex lens function, and the same picture is input in the left-eye pixel and the right-eye pixel of the display panel, at this time, because the liquid crystal lens has a convex lens function, and the optical lens unit has a concave lens function, that is, the phase delay caused by the light emitted by the left-eye pixel and the right-eye pixel after passing through the optical element can be compensated by the liquid crystal lens, thereby achieving the effect of 2D display. In the 2D display state, even if the phase retardation curve of the lc lens is not smooth enough and there is a twist phase error in the boundary area of the adjacent lc lens cells, the left-eye pixel and the right-eye pixel have the same image, so the crosstalk generated by the lc lens has less influence on the viewer viewing the display image, thereby improving the display effect of the 2D display.
From the above analysis, the display device can switch between 2D and 3D display by controlling the arrangement of the liquid crystal molecules in the liquid crystal lens, and can significantly improve the display effect in 2D and 3D display. In addition, the display device only comprises the display panel, the optical element and the liquid crystal lens, the whole display device is simple in structure, and the operation of controlling the display device to switch between 2D display and 3D display is simple and convenient.
Further, in this embodiment, the relative positions of the optical element and the liquid crystal lens may be: the optical element is located above the liquid crystal lens, or the liquid crystal lens is located above the optical element, which is not specifically limited herein; the liquid crystal lens and the optical element may or may not have a gap therebetween.
In this embodiment, the implementation of the 2D display by controlling the arrangement of the liquid crystal molecules in the liquid crystal lens and the combination of the optical element specifically includes:
referring to fig. 4, when the optical lens unit is a concave lens, in order to compensate for the phase delay caused by the light emitted from the left-eye pixel and the right-eye pixel after passing through the optical element to realize 2D display, the arrangement of the liquid crystal molecules in the liquid crystal lens is controlled to make the liquid crystal lens have the function of a convex lens, and the parallel light emitted from the pixel of the display panel shown in fig. 4 passes through the optical lens unit 2a to become divergent light, and then passes through the liquid crystal lens unit 3a to become parallel light again; alternatively, when the optical lens unit 2a is a convex lens, the arrangement of the liquid crystal molecules in the liquid crystal lens is controlled to make the liquid crystal lens unit 3a function as a concave lens, and the parallel light rays emitted by the pixels of the display panel shown in fig. 4 pass through the optical lens unit 2a to become convergent light rays, and then pass through the liquid crystal lens unit 3a to become parallel light rays again. That is, in order to realize 2D display, the arrangement of liquid crystal molecules in the liquid crystal lens is controlled so that the liquid crystal lens has a convex lens or a concave lens function, and it is necessary to satisfy that the focal position of the liquid crystal lens unit 3a coincides with the focal position of the optical lens unit 2 a.
The liquid crystal lens in the display device provided by the embodiment of the present invention may have various structures, for example, the specific structure of the liquid crystal lens is as shown in fig. 4, and includes:
an upper substrate 31, a lower substrate 32 disposed opposite to the upper substrate 31; a liquid crystal layer 35 between the upper substrate 31 and the lower substrate 32; a first transparent electrode 33 on the upper substrate 31 on a side close to the liquid crystal layer 35; a second transparent electrode 37 on the lower substrate 32 on a side close to the liquid crystal layer 35; a first alignment film 34 on the first transparent electrode 33 on a side close to the liquid crystal layer 35; and a second alignment film 36 on the second transparent electrode 37 on a side close to the liquid crystal layer 35.
Specifically, as shown in fig. 4, the first transparent electrode 33 is a plate-shaped electrode, and the second transparent electrode 37 is a plurality of strip-shaped electrodes arranged in parallel; or in the embodiment of the present invention, the first transparent electrode is a plurality of strip electrodes arranged in parallel, and the second transparent electrode is a plate electrode.
When no voltage is applied to the first and second transparent electrodes, the liquid crystal molecules are aligned in the direction of the alignment film, i.e., in the direction parallel to the upper substrate, as shown in fig. 5. The liquid crystal lens acts as a plane glass, and light can penetrate through the liquid crystal lens without any barrier.
When voltages are applied to the first transparent electrode and the second transparent electrode respectively, different voltages are applied to the strip electrodes (corresponding to the second transparent electrode in fig. 4) at different positions to generate different electric field strengths, so that the corresponding liquid crystal molecules are deflected to different degrees, and the liquid crystal layer generates the effect of a convex lens or a concave lens, as shown in fig. 4, the liquid crystal lens functions as a plurality of convex lenses, that is, includes a plurality of liquid crystal convex lens units. If the liquid crystal lens of this embodiment is disposed with a zero gap with the optical element, the difference between the focal length of the liquid crystal lens unit and the focal length of the optical element at this time is equal to the thickness of the substrate on the side of the liquid crystal lens close to the optical element.
The lens units of the optical element in the display device provided by the embodiment of the present invention may have various structural arrangement types, for example, in order to simplify the manufacturing process, the lens units may be a plurality of lenticular lens units that are parallel and adjacent to each other, and specifically, the extending direction of the lenticular lens units is not limited, and for example, the extending direction of the lenticular lens units may be the same as the extending direction of the gate lines of the display device, the same as the extending direction of the data lines of the display device, or the extending direction of the lenticular lens units forms a set included angle with the extending direction of the gate lines of the display device, which is not specifically limited herein and is specifically determined according to.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A display device switchable between 2D and 3D display, comprising: a display panel, an optical element and a liquid crystal lens which are positioned on the light-emitting side of the display panel and are arranged in a laminated manner, wherein,
the optical element includes a plurality of optical lens units, and the liquid crystal lens includes a liquid crystal lens unit corresponding to each optical lens unit;
the liquid crystal lens unit can form a liquid crystal lens unit opposite to the optical lens unit in light when 2D display is realized, and the liquid crystal lens unit has a plane glass function when 3D display is realized.
2. The display device according to claim 1, wherein the optical lens unit is a concave lens, and the liquid crystal lens unit is a liquid crystal lens unit that can form a convex lens effect when 2D display is implemented; or,
the optical lens unit is a convex lens unit, and the liquid crystal lens unit is a liquid crystal lens unit capable of forming a concave lens effect when 2D display is realized.
3. The display device according to claim 2, wherein a focal position of the optical lens unit coincides with a focal position of the liquid crystal lens unit.
4. The display device of claim 1, wherein the optical element is positioned over the liquid crystal lens, or wherein the liquid crystal lens is positioned over the optical element.
5. The display device according to claim 1, wherein the liquid crystal lens specifically comprises:
the device comprises an upper substrate and a lower substrate arranged opposite to the upper substrate;
a liquid crystal layer between the upper substrate and the lower substrate;
the first transparent electrode is positioned on one side, close to the liquid crystal layer, of the upper substrate;
the second transparent electrode is positioned on one side, close to the liquid crystal layer, of the lower substrate;
the first orientation film is positioned on one side, close to the liquid crystal layer, of the first transparent electrode;
a second alignment film on the second transparent electrode at a side close to the liquid crystal layer;
in the 2D display mode, voltage is applied to the first transparent electrode and each second transparent electrode to generate an electric field, liquid crystal molecules in the liquid crystal layer are deflected, and the liquid crystal lens unit forms a liquid crystal lens unit which has opposite action to the optical lens unit on light rays.
6. The display device according to claim 5, wherein the first transparent electrode is a plate-like electrode, and the second transparent electrode is a plurality of strip-like electrodes arranged in parallel with each other; or the first transparent electrode is a plurality of strip-shaped electrodes which are arranged in parallel, and the second transparent electrode is a plate-shaped electrode.
7. The display device according to any one of claims 1 to 6, wherein the plurality of optical lens units are a plurality of mutually parallel and adjacent lenticular lens units.
8. The display device according to claim 7, wherein an extending direction of the lenticular lens unit is the same as an extending direction of a gate line of the display device.
9. The display device according to claim 7, wherein an extending direction of the lenticular lens unit is the same as an extending direction of a data line of the display device.
10. The display device of claim 7, wherein the extending direction of the lenticular lens unit forms a predetermined angle with the extending direction of the gate line of the display device.
CN201410373908.7A 2014-07-31 2014-07-31 Display device capable of switching 2D display and 3D display Pending CN104199193A (en)

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Application publication date: 20141210